OCA7220A
OCA7220A is 3W Filter-less Mono Class-D Audio Power Amplifier manufactured by Orient Chip.
Description
- Features
OCA7220A is a Anti-Crack Protection, ultra-low
- Anti-Crack Protection provides three operating
EMI, Monaural, 3W class D audio power amplifier. modes:ACP1,ACP2,ACPOFF
Anti-Crack Protection function can adjust system gain
- Ultra low EMI automatically by detecting the output Broken audio
- POP noise reduction function distortion. It is not only avoiding the speaker from the
- Maximum output 3W damage caused by overload output power, but also
(THD+N=10%、VDD=5V、RL=4Ω) offering a fortable listening experience. OCA7220A use proprietary EEE (Enhanced
Emission Elimination) technology, significantly lower
M EMI interference in the whole bandwidth. To 60cm audio line, there is more than 20d B margin, under the FCC standard.
O OCA7220A no filter PWM modulation structure and built-in gain reduce the external ponents,
.C PCB area, system costs, and simplifying the design.
Up to 90% Efficiency fit for mobile phones and other portable audio products more.
P OCA7220A built-in over current protection, I thermal protection and low voltage malfunction prevention function, effectively protect chip in the abnormal working conditions from being damaged.
H OCA7220A provides 1.37mm
- 1.37mm
WLCSP9 package, rated operating temperature
-C range is -40 ℃ to 85 ℃. .ORIENT
- Typical Application Circuit
- Distortion rate THD+N=0.05%(output power=1W、VDD=5V)
- Filter free Class-D Structure
- Up to 90% efficiency
- High PSRR:-80d B(217Hz)
- Low Quiescent Current（2.8m A）
- Low shutdown current（<0.1u A）
- Operating Voltage Range:2.5V～5.5V
- Over-current protection function
- Thermal protection function
- Under-Voltage Lock-Out.
- Package:WLCSP9,1.37mm- 1.37mm
- Applications
- Cellular Phone
- MP3/PMP
- GPS
- Digital Photo...
